Horseshoe-calk.



PATENTED JAN. 2, 1906.

E. F. ATHERTON. HORSESHOE CALK.

APPLICATION FILED JULY 19.1904.

1 nvento:

witnesses d-v 7 attorneys UNITED STAT ES 'PATENT OFFICE.

EDWIN F. ATHERTON, OF MACEDON, NEW YORK.

HORSESHOE-CALK.

Specification of Letters Patent.

Patented J an. 2, 1906.

Application filed Jilly 19, 1904. Serial No. 217,247-

the shoe and calk to the welding heat.

The invention aims to provide a novel form of calk which when in service will maintain a penetrating edge to near the last, so as to prevent slipping, and which will present suflicient v Welding-surface to insure the formation of a firm and substantial joint and which will have a spur pointed and stout to readily penetrate the shoe and hold the calk in place during the stages preliminaryto and during the welding operation, said spur being a short distance from one end of the calk and formed by cutting a flange thereof and pressing the part separated by the cut outward from the flange.

In the accompanying drawings, forming a part of the specification, Figure 1 is a perspective view of a horseshoe-calk embodying the invention. Fig. 2 is a side view thereof. Fig. 3 is a section of the calk on the line w w of Fig. 2 looking in the direction of the arrows. Fig. 4 is a top plan view of the calk. Fig. 5 is a sectional view similar to Fig. 3 of a modified form of calk.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The body of the calk is indicated at 1 and is comparatively thin, so as to maintain a biting edge to near the last. The sides of the calk may be straight, but are preferably slightly convexed, whereby the outer edge portion is comparatively thin. A flange 2 projects from one side of the calk along the edge opposite to the sharpened or penetrating edge. The flange 2 provides ample surface for securing a firm and substantial joint between the calk and the shoe. A spur 3 projects from the flange 2 in a direction opposite to the body of the calk, and its penetrating end is sharpened to a point. This spur is arranged a short distance from one end of the calk, this being found of advantage when applying the calk to the shoe preliminary to welding. The spur 3 is formed from a part of the flange 2, the latter being cut on a diagonal line, as indicated at 4, and the part separated by the cut pressed outward, so as to form the spur. The under side of the flange 2 is beveled, as indicated most clearly in Fig. 3, and taken in connection with the diagonal or oblique out t gives to the spur the tapered form and results in the sharpened point and the stout body adjacent to the base of the spur. The cut is clear through the flange from the welding-face of the calk to the lower or tread side of the flange, forming a diagonal wall or surface corresponding with the cut and at' a right angle or perpendicular to the welding-face of the calk. This construction admits of the practicable formation of the calks by machinery comprising companion cutting-dies and also provides for the formation of a stou and substantial spur.

The calks are cut from bars which arerolled so as to present in cross-section the outline shown most clearly in Figs. 1 and 3. These bars are subsequently cut into lengths corresponding to the size of the calks, the spurs 3 being preferably formed at the same time the bars are cut into lengths.

Within the purview of the invention the front side of the calk may be straight and at a right angle to the base, as shown in Fig. 5,

the taper being on the rear sideto form the edge.

Having thus described the'invention, what is claimed as new is As a new article of manufacture, a horseshoe-calk comprising a body tapered to a longitudinal edge and having a laterally-extended flange at the opposite edge to provide an extended welding-face, the lower or tread side of the lateral flange being beveled, and having an oblique cut extended through opposite faces and having the partly-severed portion pressed outward at a right angle .to the welding-face of the calk to form a pointed spur and leaving a diagonal surface or wall in the flange perpendicular or at a right angle to said welding-v surface.

In testimony whereof I aflix my signature in presence of two witnesses.

EDWIN F. ATHERTON. [L. s.]

Witnesses:

ABRAM R. BULLIS, ELI H. GALLUP. 

